Dec 04 12:42:29.788 INFO checking padenot/trace-filtering against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 12:42:29.788 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-1/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1df97983eb2057dc6a8f7eb364e263b51ae23230-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 04 12:42:30.209 INFO [stdout] db950ddfd51400c2c19f3f179eb92bbaca6c08086591a6917ffcc7e22fcbea1e
Dec 04 12:42:30.219 INFO running `"docker" "start" "-a" "db950ddfd51400c2c19f3f179eb92bbaca6c08086591a6917ffcc7e22fcbea1e"`
Dec 04 12:42:31.711 INFO [stderr] usermod: no changes
Dec 04 12:42:31.863 INFO [stderr]    Compiling syn v0.15.8
Dec 04 12:42:41.523 INFO [stderr]    Compiling serde_derive v1.0.79
Dec 04 12:42:54.332 INFO [stderr]     Checking trace-filtering v0.1.0 (/source)
Dec 04 12:42:54.831 INFO [stderr] warning: unused import: `std::io::Read`
Dec 04 12:42:54.831 INFO [stderr]  --> src/main.rs:7:5
Dec 04 12:42:54.831 INFO [stderr]   |
Dec 04 12:42:54.831 INFO [stderr] 7 | use std::io::Read;
Dec 04 12:42:54.831 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 04 12:42:54.831 INFO [stderr]   |
Dec 04 12:42:54.831 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 12:42:54.831 INFO [stderr] 
Dec 04 12:42:54.899 INFO [stderr] warning: unused import: `std::io::Read`
Dec 04 12:42:54.899 INFO [stderr]  --> src/main.rs:7:5
Dec 04 12:42:54.899 INFO [stderr]   |
Dec 04 12:42:54.899 INFO [stderr] 7 | use std::io::Read;
Dec 04 12:42:54.899 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 04 12:42:54.899 INFO [stderr]   |
Dec 04 12:42:54.899 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 12:42:54.899 INFO [stderr] 
Dec 04 12:42:54.983 INFO [stderr] warning: unused variable: `duration`
Dec 04 12:42:54.983 INFO [stderr]   --> src/main.rs:33:13
Dec 04 12:42:54.983 INFO [stderr]    |
Dec 04 12:42:54.983 INFO [stderr] 33 |     let mut duration = 0;
Dec 04 12:42:54.983 INFO [stderr]    |             ^^^^^^^^ help: consider using `_duration` instead
Dec 04 12:42:54.983 INFO [stderr]    |
Dec 04 12:42:54.983 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 12:42:54.983 INFO [stderr] 
Dec 04 12:42:54.999 INFO [stderr] warning: unused variable: `duration`
Dec 04 12:42:54.999 INFO [stderr]   --> src/main.rs:33:13
Dec 04 12:42:54.999 INFO [stderr]    |
Dec 04 12:42:54.999 INFO [stderr] 33 |     let mut duration = 0;
Dec 04 12:42:54.999 INFO [stderr]    |             ^^^^^^^^ help: consider using `_duration` instead
Dec 04 12:42:54.999 INFO [stderr]    |
Dec 04 12:42:54.999 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 12:42:54.999 INFO [stderr] 
Dec 04 12:42:55.059 INFO [stderr] warning: variable does not need to be mutable
Dec 04 12:42:55.059 INFO [stderr]   --> src/main.rs:27:9
Dec 04 12:42:55.059 INFO [stderr]    |
Dec 04 12:42:55.059 INFO [stderr] 27 |     let mut f = File::open("trace.log.child-1").expect("file not found");
Dec 04 12:42:55.059 INFO [stderr]    |         ----^
Dec 04 12:42:55.059 INFO [stderr]    |         |
Dec 04 12:42:55.059 INFO [stderr]    |         help: remove this `mut`
Dec 04 12:42:55.059 INFO [stderr]    |
Dec 04 12:42:55.059 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 12:42:55.059 INFO [stderr] 
Dec 04 12:42:55.059 INFO [stderr] warning: variable does not need to be mutable
Dec 04 12:42:55.059 INFO [stderr]   --> src/main.rs:33:9
Dec 04 12:42:55.059 INFO [stderr]    |
Dec 04 12:42:55.059 INFO [stderr] 33 |     let mut duration = 0;
Dec 04 12:42:55.059 INFO [stderr]    |         ----^^^^^^^^
Dec 04 12:42:55.059 INFO [stderr]    |         |
Dec 04 12:42:55.059 INFO [stderr]    |         help: remove this `mut`
Dec 04 12:42:55.059 INFO [stderr] 
Dec 04 12:42:55.091 INFO [stderr] warning: variable does not need to be mutable
Dec 04 12:42:55.091 INFO [stderr]   --> src/main.rs:27:9
Dec 04 12:42:55.091 INFO [stderr]    |
Dec 04 12:42:55.091 INFO [stderr] 27 |     let mut f = File::open("trace.log.child-1").expect("file not found");
Dec 04 12:42:55.091 INFO [stderr]    |         ----^
Dec 04 12:42:55.091 INFO [stderr]    |         |
Dec 04 12:42:55.091 INFO [stderr]    |         help: remove this `mut`
Dec 04 12:42:55.091 INFO [stderr]    |
Dec 04 12:42:55.091 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 12:42:55.091 INFO [stderr] 
Dec 04 12:42:55.091 INFO [stderr] warning: variable does not need to be mutable
Dec 04 12:42:55.091 INFO [stderr]   --> src/main.rs:33:9
Dec 04 12:42:55.091 INFO [stderr]    |
Dec 04 12:42:55.091 INFO [stderr] 33 |     let mut duration = 0;
Dec 04 12:42:55.091 INFO [stderr]    |         ----^^^^^^^^
Dec 04 12:42:55.091 INFO [stderr]    |         |
Dec 04 12:42:55.091 INFO [stderr]    |         help: remove this `mut`
Dec 04 12:42:55.091 INFO [stderr] 
Dec 04 12:42:55.127 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.39s
Dec 04 12:42:55.133 INFO [stderr] su: No module specific data is present
Dec 04 12:42:55.759 INFO running `"docker" "inspect" "db950ddfd51400c2c19f3f179eb92bbaca6c08086591a6917ffcc7e22fcbea1e"`
Dec 04 12:42:55.963 INFO running `"docker" "rm" "-f" "db950ddfd51400c2c19f3f179eb92bbaca6c08086591a6917ffcc7e22fcbea1e"`
Dec 04 12:42:56.250 INFO [stdout] db950ddfd51400c2c19f3f179eb92bbaca6c08086591a6917ffcc7e22fcbea1e